Bump pymatgen from 2019.12.22 to 2020.1.10
Bump pymatgen from 2019.12.22 to 2020.1.10

Bumps [pymatgen](https://github.com/materialsproject/pymatgen) from 2019.12.22 to 2020.1.10.
- [Release notes](https://github.com/materialsproject/pymatgen/releases)
- [Changelog](https://github.com/materialsproject/pymatgen/blob/master/CHANGES.rst)
- [Commits](https://github.com/materialsproject/pymatgen/compare/v2019.12.22...v2020.1.10)

Signed-off-by: dependabot-preview[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
materialsvirtuallab/megnet,materialsvirtuallab/megnet,materialsvirtuallab/megnet,materialsvirtuallab/megnet,materialsvirtuallab/megnet